| Coat of arms of the City of Adelaide | |
| Armiger: | Lord Mayor of Adelaide |
| Year Adopted: | 1929 |
| Crest: | Right arm holding Miner’s Pick and Mural Crown |
| Torse: | Blue and Gold |
| Shield: | Red and Gold Cross, Ship, Fleece, Wheat Sheaf and Bull's head |
| Supporters: | Lion and Kangaroo |
| Compartment: | Grassy Green Field |
| Motto: | Latin: Ut Prosint Omnibus Conjuncti |
The coat of arms of Adelaide was granted by the Heralds' College on 20 April 1929.
The arms consist of a blue shield with a gold cross, which is surmounted by a red cross.
Above the shield is a golden mural crown, [1] which is a common element in the arms of municipalities.
Above the mural crown is the crest of the Corporation. It is a right arm holding a miner’s pick, representing another of the industries of the early years which contributed so much to the wealth of South Australia and Adelaide. The arm is resting on a wreath of the colours of the city, namely blue and gold.
On the right side of the shield there is a red kangaroo, and on the left side a lion, which guard and uphold the shield.
The lion represents the English colonists of South Australia and the kangaroo represents the country they helped to build.
The lion simultaneously represents Aion, the god of time, and the lion of dominion.
The red kangaroo represents the Kaurna people's totem, the red kangaroo dreaming.
The base of the shield stands on a grassy green field of rising ground.
A scroll below the arms has a Latin motto Ut Prosint Omnibus Conjuncti which translates as "united for the common good".